In the previous post, we learned that Peter deserted grace and returned to the law for righteousness.
He reverted to the law, following its mandate for a Jew to not mix with the Gentiles so the nation of Israel would not abandon God by following the false gods of the Gentile nations.
They were not to eat with or marry Gentiles.
The nation of Israel was to be a light to the Gentiles by revealing the truth about God.
When Jesus came, he was the light to the Gentiles.
Through his death, Jesus ended the Law of Moses, enabling Jews and Gentiles to assemble in on body.